WO2004080779A1

WO2004080779A1 - Tilting body of high-speed train

Info

Publication number: WO2004080779A1
Application number: PCT/KR2003/002134
Authority: WO
Inventors: Hyung Suk Mun; Sung Kyou Choi; Won Hee You
Original assignee: Korea Railroad Research Institute
Priority date: 2003-03-14
Filing date: 2003-10-15
Publication date: 2004-09-23
Also published as: CN1756684A; AU2003269541A1; KR20040081612A; CN100351126C; KR100512304B1

Abstract

A tilting body of high-speed train is disclosed, in which a body of a train is configured to be rotated itself without providing a tilting apparatus of a body, a transversal acceleration of the body can be reduced at the curved section of a rail, and a relatively high comfort to passengers can be gained with lower manufacturing and maintenance cost. A tilting body of a high-speed train comprises an interior body (10) formed with cylindrical type, having seats (13) inside the body (10), and plural windows (14) and entrances (15) provided on each longitudinal side of the body; an exterior body (20) comprising an upper supporter (22) and a lower supporter (25), the upper supporter (22) formed with cylindrical type to accommodate both ends (17) of the interior body (10), and providing a pantograph (21) thereon, and the lower supporter (25) having an opening (23) and a room, and provided on a truck; a rotating member (30) comprised with a motor (32) provided in the room of the exterior body (20), a reduction gear (33) for engaging with a driving gear (31) of the motor (32), and a driven gear (16) formed around a circumference of the interior body (10) and engaging with reduction gear (33) through the opening (23) of the exterior body (20), and a guide member (40) for guiding the interior body (10) when the interior body (10) is slanted at the inside of the exterior body (20), the guide member (40) comprising with plural running blocks (42) and guide rails (41) which are installed on a lower circumference of the interior body (10) and on an upper circumference of the exterior body (20) in a contrapositive configuration to each other.

Description

TILTING BODY OF HIGH-SPEED TRAIN

Technical Field

The present invention relates to a tilting body of high-speed train, and more particularly to a tilting apparatus installed on a body's floor, in which a body of a train is configured to be rotated itself without providing a tilting apparatus of a body, a transversal acceleration of the body can be reduced at the curved section of a rail, and a relatively higher comfort to passengers can be gained with lower manufacturing and maintenance cost.

Background Art

In general, a tilting apparatus of a train's body is classified as a bearing type and a link type, which is a technology concerned that a body can be tilted inward a curved session when a train runs on a curved session of a rail. A traversal element (α cen COS(α +γ ))of a centrifugal acceleration (α cen=V²/R), which is generated during a run of train on a curved session of a rail, can be diminished by a traversal element ( g sin (α +γ )) of a gravity acceleration (g), thus reducing a traversal acceleration experienced by passengers.

As a tilting technology is applied to a train, it increases a running speed on a curved session of a rail as well as increasing comfort to passengers. Thus, the time of service can be reduced, and a frequency of acceleration/deceleration when running on a curved session of a rail may be diminished, which cause energy consumption to lessen.

Further, the tilting apparatus would enable an improvement of speed at a curved session of a rail in approximately 30%.

A limit of speed on a curved session of a rail is prescribed for preventing deterioration in comfort to passengers rather than for a limitation by performance of a train. That is, an amount of traversal acceleration experienced by passengers when running on a curved session of a rail should not exceed a predetermined value (e.g. 0.08 (g) in the Republic of Korea). According to a principle of tilting, a tilting train can provide the fullest capacity in the case of multiple curved sessions. However, a tilting train does not operate on a straight session of a rail.

A typical example of a link type of a conventional tilting apparatus is shown in FIG. 1. Numeral 1 denotes a tilting truck, numeral 2 is a body, numeral 3 is a trolley wire, and numeral 4 means a tilting pantograph.

The conventional body tilting apparatus comprises the tilting truck 1 having a hydraulic or electrical tilting actuator and the tilting pantograph 4 receiving an electric power from the trolley wire 3 when in a tilting of the body 2. The link type tilting apparatus achieves an improvement of comfort to passengers and an increasing speed since a traversal acceleration experienced by passengers can be diminished by gravity acceleration as a tilting movement of a train's body. However, the link type has the following problems. A moving platform installed on a tilting beam has a necessary gap between a cam follower and the platform, which leads a forward and backward movement of the platform. Owing to a fretting corrosion during a sliding movement of the platform, a certain portion is locally worn away in a groove form, thus deteriorating the performance of a tilting apparatus. Further, the bearing type has also the following problems. A tilting center of a train's body can be lowered, but a contacting surface pressure with a bearing should increase due to a larger curvature of the moving platform. That interaction causes a high moving resistance being followed by a groove worn-away of the platform.

In both a link type and a bearing type of a conventional art, it is important to harmoniously operate a truck and a pantograph when in a tilting of body. The harmonious operation of these components is an up-to-date technology, which has problems of the requirement of an enormous manufacturing cost.

Disclosure of the Invention

Accordingly, the present invention has been made with taking the above problems occurring in the prior art into consideration, and an object of the present invention is to provide a tilting body of a high-speed train in which an inner body of a train is configured as the form of the cylinder so that the inner body can be rotated in the outer body of a train; it does not require to develop a tilting truck and a pantograph. Another object of the present invention is to provide a tilting body of highspeed train in which a transversal acceleration can be reduced; passengers can gain a relatively high comfort with lower manufacturing and maintenance cost.

Another object of the present invention is to provide a tilting body of highspeed train that can maintain a speed in a curved session of a rail. In order, to accomplish the above object, a tilting body of a high-speed train comprises an interior body formed with cylindrical type, having seats inside the body, and plural windows and entrances provided on each longitudinal side of the body; an exterior body comprising an upper supporter and a lower supporter, the upper supporter formed with cylindrical type to accommodate both ends of the interior body, and providing a pantograph thereon, and the lower supporter having an opening and a room, and provided on a truck; a rotating member provided in the room of the lower supporter, one end of the rotating member being connected to a lower circumference of the interior body so as to transmit a rotating force to the interior body; and a guide member for guiding the interior body when the interior body is slanted at the inside of the exterior body.

Further, the rotating member is composed of a hydraulic cylinder, one end of which is anchored to a predetermined place of the interior body through the opening of the exterior body, and the other end is anchored to a wall of the room of the exterior body, otherwise, the rotating member is comprised of a motor provided in the room of the exterior body, a reduction gear for engaging with a driving gear of the motor, and a driven gear formed around a circumference of the interior body and engaging with reduction gear through the opening of the exterior body.

Further, the guide member is comprised of plural running blocks and guide rails. The running block and the guide rail have a contrapositive configuration to each other. Brief Description of the Drawings

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a cross section view illustrating a conventional tilting body of a high-speed train;

FIG. 2 is a cross section view illustrating a tilting body of a high-speed train according to the present invention; FIG. 3 is an exploded perspective view illustrating a tilting body of a highspeed train according to the present invention;

FIG. 4 is an exploded perspective view illustrating a tilting body of a highspeed train having another embodiment of a guide member;

FIG. 5 is a cross section view illustrating a tilting body of a high-speed train having another embodiment of a rotating member;

FIG. 6 is an exploded perspective view illustrating a tilting body of a highspeed train having another embodiment of an interior body; and

FIG. 7 is a cross section view showing a status of a lilting body of a highspeed train in a curved section according to the present invention.

Best Mode for Carrying Out the Invention

This invention will be described in further detail by way of exemplary embodiments with reference to the accompanying drawings. FIG. 2 shows a cross section view illustrating a tilting body of a high-speed train belonging to the invention, FIG. 3 shows a disassembled perspective view of a tilting body of a high-speed train, and FIG. 4 shows a tilting body of a high-speed train similar to FIG.3, but having different configuration of a guide member.

As illustrated above, an inventive tilting body of a high-speed train comprises an interior body 10. Inside the interior body 10, plural seats 13 are provided in each row on a floor 12, center of which forms a passage 11. Plural windows 14 and entrances 15 are provided on each longitudinal side of the interior body 10. Further, driven gears 16 are formed around a circumstance of a lower portion of the interior body 10.

The interior body 10 could be configured as shown FIG. 6, that is, both ends 17 of the interior body 10 are formed as a cylinder, respectively, and a middle portion of the interior body 10 is the form of a square box 18, which can install upholstery in the interior body with ease.

On the other hand, an exterior body 20 is formed as a cylindrical in its inner diameter so as to accommodate the both ends 17 of the interior body 10 and to allow the interior body 10 to rotate. On an upper portion of the exterior body 20, an upper supporter 22 having a pantograph 21 thereon is provided. On a lower portion of the exterior body 20, a lower supporter 25 is formed. An opening 23 is formed at a predetermined area of an upper circular portion of the lower supporter 25. A spatial area 24 is configured in the lower supporter 25 which placed on a truck (not shown). A bolt 26 assembles the upper supporter 22 and the lower supporter 25 as constructed as above.

In the spatial area 24 of the lower supporter 25, a rotating member 30 is nested so as to rotate the interior body 10. One end of the rotating member 30 is anchored at a lower and outer circular portion of the interior body 10 to transmit the force of the rotating member 30 to the interior body 10.

As shown in FIGS. 2 and 3, the rotating member 30 comprises a motor 32, on a shaft (not shown) of which a driving gear 31 is installed to transmit a rotating force generated by sources of electricity. A reduction gear 33 is rotatably installed at the spatial area 24. The reduction gear 33 is engaged with the driving gear 31 of the rotating member 30. Further, the reduction gear extruded through the opening 23 of the lower supporter 25 is engaged with the driven gear 16 formed around a lower circumference of the interior body 10.

On the other hand, a hydraulic cylinder 34 could be adapted as the rotating member 30 as illustrated in FIG. 5. A piston portion of the hydraulic cylinder 34 is anchored to a predetermined place of the interior body 10 through the opening 23 of the exterior body 20. A hinged portion of the hydraulic cylinder 34 is anchored to a wall of the spatial area 24 of the exterior body 20. Therefore, the extraction and retraction of a piston of the hydraulic cylinder 34 causes the interior body 10 to rotate.

A guide member 40 is formed such that the interior body 10 rotates inside the exterior body 20 with a driving application of the rotating member 30. The guide member 40 comprises plural guide rails 41 and running blocks 42, which are installed on a lower circumference of the interior body 10 or on an upper circumference of the lower supporter 25 of the exterior body 20, respectively. As illustrated in FIG. 3 or FIG. 4, the guide rail 41 and the running block 42 have a contrapositive configuration to each other, depending on the nature or construction of the guide member.

Herein below the operation and its effect of the tilting body of a high-speed train according to the present invention will be described.

Firstly, when a high-speed train runs on a curved section of a rail, the interior body 10 having plural seats 13 thereinside is tilted toward an inward direction of the curved section of a rail as shown in FIG. 7. Thus, the seats 13 are slanted toward the inside of the curve of a rail so that the frequency of acceleration/deceleration can be reduced to increase an efficiency of a run of a train. To tilt the interior body 10, the motor 32 of the rotating member 30 should be rotated. Next, the driving gear 31 rotates by the rotation of the motor 32. The reduction gear 33 engaged with the driving gear 31 is rotated. Finally, the interior body 10 tilts by the rotation of the driven gear 16 engaged with the reduction gear 33.

On the other hand, the interior body could be tilted by an extraction and retraction of a piston portion of the hydraulic cylinder 34 according to another embodiment illustrated in FIG. 5.

The guide member 40 can facilitate a tilting movement of the interior body 10, and the running block 42 of the guide member 40 runs slidingly over the guide rail 41.

The running block 42 of the guide member 40 can be formed on the lower circumference of the interior body 10, and the guide rail 41 can be formed on the upper circumference of the lower supporter 25 of the exterior body 20. On the contrary, it is desirable that the running block 42 can be formed on the upper circumference of the lower supporter 25 of the exterior body 20, while the guide rail 41 can be formed on the lower circumference of the interior body 10.

Industrial Applicability

As described above, the present invention has an effect in that since an inner body of a train is configured as the form of the cylinder so that the inner body can be rotated in the outer body of a train, it does not require developing a tilting truck and a pantograph.

Further, the present invention has another effect in that since transversal acceleration can be reduced only by an operation of the tilting body at the curved section of a rail, passengers can gain a relatively high comfort with lower manufacturing and maintenance cost. The present invention has another effect that since the high speed of a train can maintain in a curved session of a rail, it has the same economical advantage as the above concerned.

Although preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as defined in the accompanying claims.

Claims

1. A tilting body of a high-speed train comprising: an interior body formed with cylindrical type, having seats inside the body, and plural windows and entrances provided on each longitudinal side of the body; an exterior body comprising an upper supporter and a lower supporter, the upper supporter formed with cylindrical type to accommodate both ends of the interior body, and providing a pantograph thereon, and the lower supporter having an opening and a room, and provided on a truck; a rotating member provided in the room of the lower supporter, one end of the rotating member being connected to a lower circumference of the interior body so as to transmit a rotating force to the interior body; and a guide member for guiding the interior body when the interior body is slanted at the inside of the exterior body.

2. The tilting body of a high-speed train as set forth in claim 1, wherein both ends of the interior body is the form of a cylinder, and a middle portion of the interior body is the form of a square box.

3. The tilting body of a high-speed train as set forth in claim 1, wherein the rotating member is composed of a hydraulic cylinder, one end of which is anchored to a predetermined place of the interior body through the opening of the exterior body, and the other is anchored to a wall of the room of the exterior body.

4. The tilting body of a high-speed train as set forth in claim 1, wherein the rotating member is composed of a motor provided in the room of the exterior body, a reduction gear for engaging with a driving gear of the motor, and a driven gear formed around a circumference of the interior body and engaging with reduction gear through the opening of the exterior body.

5. The tilting body of a high-speed train as set forth in any one of claims 1 to 4, wherein the guide member is comprised of plural running blocks and guide rails.

6. The tilting body of a high-speed train as set forth in claim 5, wherein the running block and the guide rail have a contrapositive configuration to each other.